The highest concentration of Ba was in drilling mud, additives to heavy water-based mud, and barite. The main use of barite is in heavy water-based mud, which is used for drilling marl, limestone, and shale formations. Therefore, Ba concentrations are high in the waste of these formations. On the other hand, the highest concentration of …
Barite sag is more predominant in oil-based mud. •. Barite sag could result in pipe sticking, lost circulation and well abandonment. •. Barite sag could be mitigated …
Effect of Barite Concentrations on Oil Based Drilling Mud Density and Rheology. IJAERS Journal. Drilling fluid is an essential element to the drilling process as most drilling …
This study evaluates the effectiveness of a synthetic clay (laponite) to prevent the static and dynamic sag tendency of barite-weighted drilling fluid for elevated-temperature drilling applications. Several high-density mud samples were prepared by varying the concentration of the synthetic clay. The sag tendency of the fluid samples …
the concentration of barite in the drilling mud is increased as the well is drilled deeper (Neff et al. 1987). Barite is a soft, dense (4.1–4.5 g/cm3) natural mineral.
Table of Contents. We can define oil based mud as a drilling fluid with oil as its continuous external phase, and the water, if present, is a dispersed or internal phase. The solids in an oil-based fluid are oil-wet, all drilling additives are oil dispersible, and their filtrate is oil. The water, if present, is emulsified in the oil phase.
Separate drilling muds were formulated by varying the concentration of iron ore and barite to attain the same mud weight ranging between 9.0 ppg to 13 ppg at 77 0F (25 0C) and 104 0F (40 0C).
The yield point at 0% barite concentration gave the least yield point; this signifies that the barite concentration aids in the carrying capacity of the drilling mud. It was also observed that the barite concentration can be used to make the fluid more pseudo-plastic in nature.
AMC BARITE™ is chemically inert to all drilling fluids additives and is used to increase the density of any drilling fluid system. AMC BARITE™ is added to a mud system to help control formation pressures, stabilise the borehole or used in kill fluids. ... Several factors will dictate the most appropriate concentration rate. Please contact ...
Barite sag is a challenging phenomenon encountered in deep drilling with barite-weighted fluids and associated with fluid stability. It can take place in vertical and directional wells, whether in dynamic or static conditions. In this study, an anti-sagging urea-based additive was evaluated to enhance fluid stability and prevent solids sag in water …
Filtration, Fluids, Permeability, Porosity, Viscosity. Abstract. Weighting agents such as barite, micromax, ilmenite, and hematite are commonly added to drilling fluids to produce high-density fluids that could be used …
Barite dosages of 250, 350, and 450 grams resulted in drilling mud density equal to 13.9, 15.6, and 17.5 ppg, respectively. Another important property is the drilling fluidpH, and it was evaluated ...
Barite is the most used additive in drilling fluids. The the high-density barite mud suspends the rock cuttings produced by the drill and carries them up to the surface. Not surprising that 70% ...
Barite, a vital industrial mineral finds a wide array of utilizations most especially as a weighting agent in the drilling mud (specific gravity 4.42 g/cm 3). In this study, the purification of Azara (Nigeria) barite ore is eco-feasible and could by far place the nation among the global barite producers.
Abstract and Figures. The suitability of local barite as weighting agent in drilling mud was appraised using some physico-chemical parameters. Thirty samples, A, sourced from Obi in Nasarawa State ...
The Cutting Concentration of average of 4.15 vol. % at 355gpm and 300ft/hr ROP for Water-Based mud, Oil-Based mud and Synthetic-Based mud, with MAXROP of 364ft/hr under the same conditions was ...
However, Samples Azara (BaSO 4 77.76%), Kanam (BaSO 4 10.88%), and Baise (BaSO 4 83.16%) need beneficiation from gangue minerals to be comparable to imported barite for drilling mud application. However, they can be used as fillers or extenders in paper and rubber industries but require further upgrading to be used as …
The yield point at 0% barite concentration gave the least yield point; this signifies that the barite concentration aids in the carrying capacity of the drilling mud. It was also observed that the barite concentration can be used to make the fluid more pseudo-plastic in nature. The consistency index (K) increases as the barite concentration is ...
The yield point at 0% barite concentration gave the least yield point; this signifies that the barite concentration aids in the carrying capacity of the drilling mud. It was also observed that the barite concentration can be used to make the fluid more pseudo-plastic in nature.
Barite (barium sulfate, BaSO4) contains 58.8 % barium and has a specific gravity of (4.2–4.5). The barite used in drilling fluid, which is normally impure, is of lower specific gravity as it contains other minerals such as quartz, chert, calcite, anhydrite, celestite, and various silicates. Also, it … See more
The yield point at 0% barite concentration gave the least yield point; this signifies that the barite concentration aids in the carrying capacity of the drilling mud. It was also observed that the barite concentration can be used to make the fluid more pseudo-plastic in nature. The consistency index (K) increases as the barite …
The consistency index (K) increases as the barite concentration is increased, which indicated that the fluid becomes more viscous when barite …
The weighting material type and concentration have a significant impact on the drilling fluid properties. A common weighting material used in the oil and gas industry is barite. In this work, the impact of barite concentration on water-based drilling fluid was evaluated. The investigated drilling fluid properties are density, pH value ...
A common weighting material used in the oil and gas industry is barite. In this work, the impact of barite concentration on water-based drilling fluid was evaluated. The investigated drilling ...
A common weighting material used in the oil and gas industry is barite. In this work, the impact of barite concentration on water-based drilling fluid was evaluated. The investigated drilling ...
PDF | On Jan 1, 2020, E. C. Ndubuisi and others published Effect of Barite Concentrations on Oil Based Drilling Mud Density and Rheology | Find, read and cite all the research …
Weighting agents are mixed with the drilling mud to provide the high density required to control high-pressure high-temperature (HPHT) wells throughout the drilling operation. Solids sag occurs when the weighting agent separates from the liquid phase and settles down, causing variations in the drilling fluid density. This study evaluates …
Analysis of the stability of oil-based drilling muds by electrical stability measurements as a function of oil-water ratio, weighting material and lubricant …
A special fluid known as mud or drilling fluid is used in the drilling process. ... reported that the incorporation of laponite into barite-based mud greatly mitigated the static and dynamic sagging tendencies of the mud. The study showed that at an optimal laponite concentration of 0.75 lb/bbl, ...
The basic ecologically clean barite-free drilling mud of high density (1.45 g/cm. 3) is. ... The optimal concentration of PHPA was determined: in each solution it is 1 g/L. 2. It is recommended to ...
Barite was received in powder form and conformed to the API specification. In contrast, ilmenite was received in coarse form and had to be grounded and sieved to meet the API specification [10], [11], [12].The mud weight of the considered mud samples were determined by using the conventional mud balance, while the rheological properties …
This behavior indicates a decrease of the plastic viscosity sensitivity with an oil fraction disturbance, in a drilling mud with an excess of barite concentration (or with an increase of mud weight). However, Fig. 4 (A) and (B) also indicate a downward trend of the emulsifier concentration sensitivity with the mud weight increase. This ...
The high volume, concentration, and discharge rate water-based drilling mud discharges (mud pit dumps) were identified as the most significant dispersal risk, but longer-range movement was limited ...
Bentonite continues to rank second in quantity only to barite as a mud additive, as shown in Fig. 11-2.14 In spite of the partial replacement of bentonite by polymers in some muds, about 1,160,000 short tons (1,050,000 tonnes) of swelling-type bentonite, with a well-site cost of roughly $120,000,000 (check also oil well drilling well …
The bioavailable fraction of metals is the fraction that dissolves from the nearly insoluble, solid barite into seawater or sediment porewater. Barite-seawater and barite-porewater distribution coefficients (Kd) were calculated for determining the predicted environmental concentration (PEC; the bioavailable fraction) of metals from drilling mud ...